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nir: Add a new nir_cf_list_is_empty_block() helper.

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Helper and name suggested by Eric Anholt.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Kenneth Graunke 2019-04-08 11:22:20 -07:00
parent 08dc93c67c
commit 2b44b27dbe
1 changed files with 15 additions and 0 deletions
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15
src/compiler/nir/nir.h
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@ -2127,6 +2127,21 @@ nir_loop_last_block(nir_loop *loop)
return nir_cf_node_as_block(exec_node_data(nir_cf_node, tail, node));
}
/**
* Return true if this list of cf_nodes contains a single empty block.
*/
static inline bool
nir_cf_list_is_empty_block(struct exec_list *cf_list)
{
if (exec_list_is_singular(cf_list)) {
struct exec_node *head = exec_list_get_head(cf_list);
nir_block *block =
nir_cf_node_as_block(exec_node_data(nir_cf_node, head, node));
return exec_list_is_empty(&block->instr_list);
}
return false;
}
typedef struct {
uint8_t num_components;
uint8_t bit_size;